Unit3TheWorldofScienceGrammarPresentPerfectPassive课件-高中外研版英语

Book3

Unit3

TheworldofscienceGrammarUnit3现在完成时(have/has+v-ed)1)表示说话时已经完成的动作，而且这个动作的结果对现在仍有影响;2)表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去。Unit3被动语态助动词be+及物动词的过去分词be随主语的人称、数和时态的变化而变化。当强调动作承受者，不必说出执行者或含糊不清的执行者时，多用被动语态。Unit3VerbformActivePassivehave/has+been+v-edhave/has+v-ed现在完成时的被动语态现在完成时被动语态的结构主动被动Unit3现在完成时被动语态的意义表示动作发生在过去,到现在已经完成或对现在产生的影响。动词和主语构成被动关系。肯定式：have/has+been+v-ed否定式：have/has+not+been+v-ed一般疑问句：Have/Has+主语+been+v-ed?特殊疑问句：疑问词+have/has+been+v-ed?现在完成时的被动语态Unit31.并不是所有动词都有被动语态。happen,takeplace,breakout,belongto,cost,last等不及物动词或词组无被动语态。GreatchangeshavetakenplaceinChinasince1978.2.动词短语是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。

e.g.Theorphanshavebeentaken

goodcareofhere．

【考点提示】Unit33.现在完成时与一般过去时被动语态的区别

一般过去时被动语态表示一个被动的动作发生在过去，其结果对现在没有影响；

现在完成时被动语态的动作或状态尽管发生在过去，但侧重说明该动作或状态对现在造成的影响或结果。【考点提示】Unit3Themachinehasbeenrepaired．机器已经修好了。(动作发生在过去，但对现在有影响，说明机器修好了，可以使用了。)Themachinewasrepairedyesterday．机器昨天修了。(强调机器是昨天修好的。)【考点提示】Unit31.将下面句子中的主动语态变为被动语态。1)NobodyhasheardofSusansinceshemoved.

________________________________________.2)Wehaven'tgiventhemanythingtoeat.

_________________________________________3)Wehavealreadydiscussedthisquestion.

_________________________________________Susanhasn'tbeenheardofsinceshemoved.Thisquestionhasalreadybeendiscussed.Theyhaven'tbeengivenanythingtoeat.Unit31)Thesamemistake_______________(make)manytimes.2)Morethan100famousfilms________________(show)inthecitysinceJuly.2.用括号内动词的正确形式填空。hasbeenmade

havebeenshownUnit33)Forhistenthbirthday,Carlwantedabicyclebut________(give)aguitarbyhisparents.4)Althoughit_______________(play)manytimes,hestilllovesit.

5)Threenewschools_______________(open)inourcityinthepast5years.hasbeenplayedhavebeenopenedwasgivenUnit3Rewritetheunderlinedpartsusingthepresentperfectpassive.Grammar:PresentperfectpassiveWithinthenext80years,ourlivesmaybechangedbeyondrecognitionby3Dprinting.Ithasalreadyaffectedmanythingsinourlives,rightdowntothefoodweeat.Forinstance,somerestaurantsinLondonhaveserved3D-printedhamburgerstocustomers.Butperhapsthemostsignificantsuccessthatpeoplehaveachievedtodateisinmedicine.Theyhavemadehumanbodyparts,includingabeatingheart,with3Dprintingtechnology.Anditisnotjusthumanswhoarebenefiting—inBrazil,peoplehavegivenanew3D-printedshelltoaturtleinjuredinaforestfire!Unit3Grammar:PresentperfectpassiveWithinthenext80years,ourlivesmaybechangedbeyondrecognitionby3Dprinting.Ithasalreadyaffectedmanythingsinourlives,rightdowntothefoodweeat.Forinstance,somerestaurantsinLondonhaveserved3D-printedhamburgerstocustomers.Butperhapsthemostsignificantsuccessthatpeoplehaveachievedtodateisinmedicine.Theyhavemadehumanbodyparts,includingabeatingheart,with3Dprintingtechnology.Anditisnotjusthumanswhoarebenefiting—inBrazil,peoplehavegivenanew3D-printedshelltoaturtleinjuredinaforestfire!Manythingsinourliveshavealreadybeenaffected,Unit33D-printedhamburgershavebeenservedtocustomersinsomerestaurantsinLondon.Butperhapsthemostsignificantsuccessthathasbeenachievedtodateisinmedicine.Withinthenext80years,ourlivesmaybechangedbeyondrecognitionby3Dprinting.Ithasalreadyaffectedmanythingsinourlives,rightdowntothefoodweeat.Forinstance,somerestaurantsinLondonhaveserved3D-printedhamburgerstocustomers.Butperhapsthemostsignificantsuccessthatpeoplehaveachievedtodateisinmedicine.Theyhavemadehumanbodyparts,includingabeatingheart,with3Dprintingtechnology.Anditisnotjusthumanswhoarebenefiting—inBrazil,peoplehavegivenanew3D-printedshelltoaturtleinjuredinaforestfire!Grammar:PresentperfectpassiveUnit3Withinthenext80years,ourlivesmaybechangedbeyondrecognitionby3Dprinting.Ithasalreadyaffectedmanythingsinourlives,rightdowntothefoodweeat.Forinstance,somerestaurantsinLondonhaveserved3D-printedhamburgerstocustomers.Butperhapsthemostsignificantsuccessthatpeoplehaveachievedtodateisinmedicine.Theyhavemadehumanbodyparts,includingabeatingheart,with3Dprintingtechnology.Anditisnotjusthumanswhoarebenefiting—inBrazil,peoplehavegivenanew3D-printedshelltoaturtleinjuredinaforestfire!Grammar:PresentperfectpassiveHumanbodyparts,includingabeatingheart,havebeenmadewith3Dprintingtechnology.Anew3D-printedshellhasbeengiventoaturtleinjuredinaforestfire!Unit3ImagineyouareDrMoore.Lookatthepicturesandtellthepoliceaboutthedamageandlosstoyourlab.Usethepresentperfectpassivewhereappropriate.Grammar:PresentperfectpassiveUnit3Grammar:Presentperfectpassive1.Thelockonthedoorhasbeenbroken.2.Thewindowhasbeenbroken.3.Mytwolaptopshavebeenstolen.4.Beakersandtesttubeshavebeendestroyed.5.T